protected void SelectSingleChildShape()
{
Controller.DeselectCurrentSelectedElements();
GraphicElement el = Controller.GetChildShapeAt(CurrentMousePosition);
Controller.SelectElement(el);
}
protected void DetachFromAllShapes(GraphicElement el)
{
el.DisconnectShapeFromConnector(GripType.Start);
el.DisconnectShapeFromConnector(GripType.End);
el.RemoveConnection(GripType.Start);
el.RemoveConnection(GripType.End);
}
public void Redraw(GraphicElement el, int dx = 0, int dy = 0)
{
var els = EraseTopToBottom(el, dx, dy);
DrawBottomToTop(els, dx, dy);
UpdateScreen(els, dx, dy);
}
public override void Update(GraphicElement el)
{
base.Update(el);
el.Text = Text;
el.TextFont = Font;
el.TextColor = TextColor;
}
// Deselect all other elements.
public override void SelectOnlyElement(GraphicElement el)
{
List <GraphicElement> intersections = FindAllIntersections(el).ToList();
List <GraphicElement> deselectedElements = new List <GraphicElement>();
selectedElements.Where(e => e != el).ForEach(e =>
{
intersections.AddRange(FindAllIntersections(e));
e.Deselect();
deselectedElements.Add(e);
});
if (!selectedElements.Contains(el))
{
selectedElements.Add(el);
el.Select();
}
deselectedElements.ForEach(e => selectedElements.Remove(e));
EraseTopToBottom(intersections);
DrawBottomToTop(intersections);
UpdateScreen(intersections);
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
}
public ShapeProperties(GraphicElement el) : base(el)
{
Text = el.Text;
Font = el.TextFont;
TextColor = el.TextColor;
TextAlign = el.TextAlign;
}
public void Remove(GraphicElement el)
{
if (cachedElements.Contains(el))
{
cachedElements.Remove(el);
}
}
public void MoveElement(GraphicElement el, Point delta)
{
if (el.OnScreen())
{
Trace.WriteLine("*** MoveElement " + el.GetType().Name);
int dx = delta.X.Abs();
int dy = delta.Y.Abs();
var els = EraseIntersectionsTopToBottom(el, dx, dy);
// X1
//el.MoveUndoRedo(delta, false);
el.Move(delta);
el.UpdatePath();
UpdateConnections(el);
DrawBottomToTop(els, dx, dy);
UpdateScreen(els, dx, dy);
}
else
{
el.CancelBackground();
// X1
//el.MoveUndoRedo(delta, false);
el.Move(delta);
// TODO: Display element if moved back on screen at this point?
}
}
protected void Reorder(GraphicElement el, int n)
{
EraseTopToBottom(elements);
elements.Swap(n, elements.IndexOf(el));
DrawBottomToTop(elements);
UpdateScreen(elements);
}
public virtual void Update(GraphicElement el)
{
el.DisplayRectangle = Rectangle;
el.BorderPen.Color = BorderColor;
el.BorderPen.Width = BorderWidth;
el.FillBrush.Color = FillColor;
el.PropertiesChanged.Fire(this, new PropertiesChangedEventArgs(el));
}
public ElementProperties(GraphicElement el)
{
this.element = el;
Rectangle = el.DisplayRectangle;
BorderColor = el.BorderPen.Color;
BorderWidth = (int)el.BorderPen.Width;
FillColor = el.FillBrush.Color;
}
public void Redraw(GraphicElement el, int dx = 0, int dy = 0)
{
// Trace.WriteLine("Shape:Redraw1");
var els = EraseIntersectionsTopToBottom(el, dx, dy);
DrawBottomToTop(els, dx, dy);
UpdateScreen(els, dx, dy);
}
public override void Update(GraphicElement el, string label)
{
(label == "Text").If(() => this.ChangePropertyWithUndoRedo <string>(el, "Text", "Text"));
(label == "Font").If(() => this.ChangePropertyWithUndoRedo <Font>(el, "TextFont", "Font"));
(label == "TextColor").If(() => this.ChangePropertyWithUndoRedo <Color>(el, "TextColor", "TextColor"));
(label == "TextAlign").If(() => this.ChangePropertyWithUndoRedo <Color>(el, "TextAlign", "TextAlign"));
base.Update(el, label);
}
protected void AddShape()
{
Controller.DeselectGroupedElements();
GraphicElement el = Controller.GetRootShapeAt(CurrentMousePosition);
Controller.SelectElement(el);
justAddedShape.Add(el);
}
public void DeleteElement(GraphicElement el)
{
el.DetachAll();
EraseTopToBottom(elements);
elements.Remove(el);
el.Dispose();
DrawBottomToTop(elements);
}
public void UpdateSize(GraphicElement el, ShapeAnchor anchor, Point delta)
{
Point adjustedDelta = anchor.AdjustedDelta(delta);
Rectangle newRect = anchor.Resize(el.DisplayRectangle, adjustedDelta);
UpdateDisplayRectangle(el, newRect, adjustedDelta);
UpdateConnections(el);
}
public IEnumerable <GraphicElement> FindAllIntersections(GraphicElement el, int dx = 0, int dy = 0)
{
List <GraphicElement> intersections = new List <GraphicElement>();
RecursiveFindAllIntersections(intersections, el, dx, dy);
return(intersections.OrderBy(e => elements.IndexOf(e)));
}
public void Redraw(GraphicElement el, int dx = 0, int dy = 0)
{
Trace.WriteLine("*** Redraw1 " + el.GetType().Name);
var els = EraseIntersectionsTopToBottom(el, dx, dy);
DrawBottomToTop(els, dx, dy);
UpdateScreen(els, dx, dy);
}
public virtual void Update(GraphicElement el, string label)
{
(label == "DisplayRectangle").If(() => el.DisplayRectangle = Rectangle);
(label == "BorderColor").If(() => el.BorderPen.Color = BorderColor);
(label == "BorderWidth").If(() => el.BorderPen.Width = BorderWidth);
(label == "FillColor").If(() => el.FillBrush.Color = FillColor);
// el.PropertiesChanged.Fire(this, new PropertiesChangedEventArgs(el));
}
protected IEnumerable <GraphicElement> EraseTopToBottom(GraphicElement el, int dx = 0, int dy = 0)
{
Trace.WriteLine("EraseTopToBottom");
IEnumerable <GraphicElement> intersections = FindAllIntersections(el, dx, dy);
intersections.Where(e => e.OnScreen(dx, dy)).ForEach(e => e.Erase());
return(intersections);
}
public void UpdateConnections(GraphicElement el)
{
el.Connections.ForEach(c =>
{
// Connection point on shape.
var cps = el.GetConnectionPoints().Where(cp2 => cp2.Type == c.ElementConnectionPoint.Type);
cps.ForEach(cp => c.ToElement.MoveAnchor(cp, c.ToConnectionPoint));
});
}
/// <summary>
/// Center the canvas on the selected element.
/// This does not add the action to the undo stack.
/// </summary>
public void FocusOn(GraphicElement el)
{
int cx = (Canvas.Width - el.DisplayRectangle.Width) / 2;
int cy = (Canvas.Height - el.DisplayRectangle.Height) / 2;
int dx = -(el.DisplayRectangle.X - cx);
int dy = -(el.DisplayRectangle.Y - cy);
MoveAllElements(new Point(dx, dy));
}
public void Add(GraphicElement el)
{
if (!cachedElements.Contains(el))
{
// Cache the element being deleted so we can do a proper dispose of deleted elements at some point.
// TODO: When is that "point"?
cachedElements.Add(el);
}
}
public override void Update(GraphicElement el, string label)
{
// X1
//(label == nameof(StartCap)).If(()=> this.ChangePropertyWithUndoRedo<AvailableLineCap>(el, nameof(StartCap), nameof(StartCap)));
//(label == nameof(StartCap)).If(() => this.ChangePropertyWithUndoRedo<AvailableLineCap>(el, nameof(EndCap), nameof(EndCap)));
(label == nameof(StartCap)).If(() => ((Connector)el).StartCap = StartCap);
(label == nameof(EndCap)).If(() => ((Connector)el).EndCap = EndCap);
base.Update(el, label);
}
/// <summary>
/// Recursive loop to get all intersecting rectangles, including intersectors of the intersectees, so that all elements that
/// are affected by an overlap redraw are erased and redrawn, otherwise we get artifacts of some intersecting elements when intersection count > 2.
/// </summary>
protected void FindAllIntersections(List <GraphicElement> intersections, GraphicElement el, int dx = 0, int dy = 0)
{
// Cool thing here is that if the element has no intersections, this list still returns that element because it intersects with itself!
elements.Where(e => !intersections.Contains(e) && e.UpdateRectangle.IntersectsWith(el.UpdateRectangle.Grow(dx, dy))).ForEach((e) =>
{
intersections.Add(e);
FindAllIntersections(intersections, e);
});
}
protected void UpdateConnections(GraphicElement el)
{
el.Connections.ForEach(c =>
{
// Connection point on shape.
ConnectionPoint cp = el.GetConnectionPoints().Single(cp2 => cp2.Type == c.ElementConnectionPoint.Type);
c.ToElement.MoveAnchor(cp, c.ToConnectionPoint);
});
}
public void Redraw(GraphicElement el, Action <GraphicElement> afterErase)
{
var els = EraseTopToBottom(el);
UpdateScreen(els);
afterErase(el);
DrawBottomToTop(els);
UpdateScreen(els);
}
public void ShapeDeleted(GraphicElement el)
{
if (HoverShape == el)
{
DraggingSurface = false;
HoverShape.ShowAnchors = false;
HoverShape = null;
}
}
protected void ShowAnchors()
{
GraphicElement el = Controller.GetRootShapeAt(CurrentMousePosition);
el.ShowAnchors = true;
Controller.Redraw(el);
HoverShape = el;
Controller.SetAnchorCursor(el);
}
public override void DeselectElement(GraphicElement el)
{
IEnumerable <GraphicElement> intersections = FindAllIntersections(el);
EraseTopToBottom(intersections);
el.Selected = false;
selectedElements.Remove(el);
DrawBottomToTop(intersections);
UpdateScreen(intersections);
}
